You cannot permanently delete Amazon order history from your account
You can archive an order to hide it from the default order list
Sign in to your Amazon account
Go to Your Orders
Find the order you want to hide
Select Archive order
Confirm the action
To view archived orders, go to Account & Lists
Select Archived Orders
Unarchive an order if needed from the archived orders page
To reduce visible activity, delete browsing history from Your Browsing History
To remove search history, clear your Amazon search history
To limit future tracking, adjust your account privacy and recommendation settings